eXo Platform - Digital workplace solution
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Apache Airflow - Airflow is a platform to programmaticaly author, schedule and monitor data pipelines.
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.